Door fastener



G. P. WILD DOOR FASITENER June 9, 1936.

2 SheetsSheet 1 Filed June 21, 1935 Z fan 7W INVENTOR 42 8500? June 9, 1936.

'6. P. WILD DOOR FASTENER 2 Sheets-Sheet 2 Filed June 21, 1935 lNV ENTOR Pfl/A/P 14 BY Z M'TOR EY Patented June 9, 1936 UNITED STATES PATENT OFFICE DOOR FASTENER Gunther Philip Wild, Philadelphia, Pa.

Application June 21,

4 Claims.

My invention relates to a; new and useful door fastener and 'it relates more particularly to a door fastener particularly adapted in structure and operation for application to refrigerator rooms and trucks and the like, whereby the doors of such rooms or trucks may be closed and locked and unlocked by a very simple operation, and whereby, such doors may easily be unlocked from the inside, to prevent imprisonment of the operator therein, in the case of accidental locking of such doors.

My invention still further relates to a construction of this character which is: adapted to withstand any impact to which it will be subject in normal use, and one which can be easily manipulated and without undue exertion, notwithstanding the size or rigidity of the construction.

'My invention. still further relates to a door fastener of. this general type which is of a simple construction, which is not apt to get out of order, and which is inexpensive to manufacture and assemble, my present invention being an improvement on the lock disclosed and claimed in my Patent 1,752,131.

In the accompanying drawings;

Fig. 1 represents a front elevation of a door fastener embodying my invention shown as applied to a door;

Fig. 2' representsa top plan view of Fig. 1, certain parts being shown in dotted lines in Fig. 2, and not shown in Fig. 1. r

Fig. 3 represents a section of line 3--3 of Fig. 1.

Fig. 4 represents a section of line 4-4 of Fig. 1.

Fig. 5 represents asecti'on of line 5-5 of Fig. 4.

Fig. 6 represents a view, on an enlarged scale, and in side elevation, of the latch.

Fig. '7 represents a view, on an enlarged scale, partly in section, and partly in: elevation, of the locking: bolt coacting with said latch.

Referring to the drawings in which like characters indicate like parts, I designates aadoor and 2 designates a door jamb (or vice versa) to which the fastener is shown applied. Secured to the lamb 2 is a casing 3, in which is positioned the sliding keeper 4, the outer end of which projects through an opening in the wall 6 of the casing 3. The keeper 4 is provided with the head 5 which projects through another opening in the inner wall I of the casing 3. The outer end of the latch is provided with any stop means 8, and on the body portion of the latch 4 is provided the coiled spring l0 which constantly urges it towards the right of Figs. 1 and 4. The head 5 of the sliding keeper 4 is provided with the slantlng surfaces II and I2, and with the .V-shaped 1935, Serial No. 27,643 7 (01. --29) Y cut formed by the slanting surfaces l3 and I4, which will hereinafter be referred to. Within the casing 3 is positioned the latch locking bolt. l5 which is pivotally mounted as at It, the locking bolt l5 being tensioned by the spring I! coiled about the pin l8 which engages the sleeve l9 and which bears against the inner surface of the wall 6' of the casing 3, as shown in Fig. 4. Co-acting with the locking bolt I5, is a push button 20 which is tensioned by the spring'2l.

On the door I is mounted a base bracket 22 which has the lugs 23 in which is journalled the pin 25 to which the latch release 24 is keyed as at 21. Around the pin25 is coiled the spring 30, one end 3| of which bears against the bracket 22, and the other end32 of which bears against the latch release 24, said spring 30 serving to tension the latch release 24 in the position shown in Fig. 4. The latch release 24 is provided with the stop 34 which, when the latch release is in the position shown in Fig. 4, abuts against the bracket 22 to limit the movement of the latch release 24. In order to permit the manufacture of the bracket 22 and the latch release 24 of light aluminum or other metal, which is relatively soft, the inner end of the bracket 22 is provided with the tempered steel plate 36 suitably secured thereto, as at '31.

With the parts as shown in Fig. 4, the door is closed, and, in order to open the door, it is merely necessary to pull the handle 40 of the latch release 24 in the direction of the arrow, thereby pressing the inner end 42 of the latch release 24 toward the door of the jamb and against the slanting surface 12 of the head 5 of the keeper 4. This results in pushing the head 5 of the keeper 4' into'the casing 3, against the spring l0, thus permitting the inner end 44 of the tempered plate 36 to'cl'ear the head 5 of the keeper 4 and the door is opened. To close the door, it is merely necessary to slam it shut and the inner end 44', of the plate '36 will ride uponthe slanting surface l2 of the head 5 of the keeper 4, and push it into the casing 5 against the spring ID.

If it is desired to lock the fastener temporarily, it is merely necessary to press on the push button 20, thereby tripping the locking bolt [5 into the position shown in Fig. 4, whereupon the inner end 46 of the locking bolt l5 will fit into the V cut, in the head 5, of the keeper 4, with the surfaces 41' and 48 of the locking bolt l5 abutting more or less against the slanting surfaces [3 and M on the latch head 5. In this position it is impossible to open the door, since the locking bolt l5 will prevent the latch head 5 from sliding into the casing 3. The push button 20 is tensioned by the spring 2|, and thus is retained in the locking position shown in Fig. 4. In order to permit opening of the door, the casing 3 is provided with a shaped slot 49 through which a suitably shaped key 50 is inserted to press against the end of the sleeve 19 of the locking bolt l5, and to trip the latter on its pivot l6 into a position opposite that illustrated in Fig. 4, so that the inner end 45 of the locking bolt I5, will clear the V out, and the slanting surfaces l3 and [4 on the latch head 5 thus permitting the keeper 4 to slide freely. For permanent looking, I provide the head 5 of the keeper 4 with the hole 53 through which a padlock 54 may be passed. To guard against the danger of the operator being imprisoned in the refrigerating room of a butcher shop, or in the refrigerating compartment of an ice truck, or the like, I have provided the head 5 of the keeper 4 with the hole 51, and I have provided the bracket 22 with the hole 58 through which the elongated pin or rod Gil may be inserted to push the handle 40 of the latch release 24 in the direction of the arrow, or to trip the locking bolt l5 against the pressure of the push button 20, it being understood that corresponding holes 62 and 63 are formed in the jamb and door respectively. The pin or rod 60 is provided with a handle with which it is, at all times, suspended within the room or truck provided with this lock, so as to be, at all times, available for use; Thus assuming that the operator has locked himself in, and assuming that the door was shut to, and that someone pressed the push button 20, to trip the locking bolt [5 into the position shown in Fig. 4, it is merely necessary for the imprisoned operator to insert the rod 60 through the registering openings 62 and 51 to reach the inner end of the locking bolt 15 and to trip it out of the locking position shown in Fig. 4. Next, the operator uses the same rod (ill to insert it through the registering openings 63 and 58 to push the handle 40 of the latch release 24 in the direction of the arrow, whereupon the door is opened. The slanting surfaces l3 and II on the latch head 5 facilitate the engagement and disengagement of the inner end 46 of the locking bolt 15.

The locking mechanism consisting of the bolt [5 and the push button 20, and their adjuncts, constitute an extremely simple and inexpensive construction, since, to lock the door, it would merely be necessary to press the push button 20 into the casing 3 as shown in Fig. 4, without the necessity of putting a key into the lock and turning it, and to disengage the locking bolt I5, I merely use a key 50 shaped to correspond with the shape of the key slot 49, formed in the casing 3, and the mere insertion of the key 50 into the slot 49, without turning the key in any way, is enough to trip the locking bolt 15 out of its looking into its disengaging position. By making the latch and the plate 36 of hard tempered metal, I am enabled to make the rest of my door fastener of light cast aluminum, or other desired metal, since it is the plate 36 and the keeper 4 that receive the impact resulting from repeatedly slaming the door shut, and not the other parts described.

Having thus described my invention, what I claim, and desire to secure by Letters Patent is:

1. A door fastener comprising a keeper element adapted to be actuated by a keeper release element, one of said elements being secured to a jamb and the other to a door, and locking means adapted to engage said keeper element, there being a hole in said keeper element registering with a hole in that part of the door construction to which said keeper element is secured to afford access to said locking means for disengaging said locking means from said keeper element from within said door.

2. A door fastener comprising a keeper element adapted to cooperate with a keeper release element, one of said elements being secured to the door and the other to the jamb of a door construction, a locking bolt pivotally mounted in proximity to said keeper element and adapted to retain said keeper element against movement, there being a hole in said keeper element registering with a hole in that part of the door construction to which said keeper element is secured, said holes serving for the admission of means from within said door for disengaging said looking bolt from said keeper element.

3. A door fastener comprising a keeper element adapted to cooperate with a keeper release element, one of said elements being secured to the door and the other to the jamb of a door construction, a locking bolt adapted to retain said keeper element against movement, means for retaining said bolt in or out of engagement with said keeper element, said keeper element having a through opening therein in registration with an opening in that part of the door construction to which it is secured, said holes serving for the admission of means from within said door for disengaging said locking bolt from said keeper element.

4. A door fastener comprising a keeper element adapted to cooperate with a keeper release element, one of said elements being secured to the door and the other to the jamb of a door construction, a locking bolt in proximity to and adapted to engage said keeper element, a casing enclosing said bolt, and a retaining device associated with the operative end of said bolt for retaining said bolt in position when it is in engagement with said keeper element, there being a slot in said casing registering with the other end of said bolt for the insertion of means for disengaging the operative end of said locking bolt from said keeper element against the action of said retaining device.

GUNTHER PHILIP WILD. 

